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Semtech Corporation RCLAMP0821P.TCT
- Part No.:
- RCLAMP0821P.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
RCLAMP0821P.TCT.pdf
- Description:
- TVS DIODE 8VWM 25VC SLP1006P2
- Quantity:
- Payment:
- Shipping:
Inventory:3,397
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Product details
Overview
RCLAMP0821P.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS/ESD protection of single 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), and stable 27.5–28V clamping voltage across full current and temperature range. It protects USB PD and Type-C VBUS lines in industrial and portable equipment.
For engineers reviewing the RCLAMP0821P.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability under surge, low dynamic resistance (<20 mΩ), junction capacitance (175 pF), and DFN-6 package compatibility with high-density PCB layouts.
Technical Context
The RCLAMP0821P.TCT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant-27.5–28V at both 24A and 40A-due to decreasing RDS(on) under surge conditions.
It operates across –40°C to +125°C with <600 nA reverse leakage at 22V, 175 pF junction capacitance at 22V/1MHz, and 1120W peak pulse power handling. Its functional architecture enables robust protection for 22V bus lines without thermal derating penalties typical of junction-based TVS devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - Matches nominal USB PD VBUS and industrial 24V rail systems without overvoltage stress. |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs) - Ensures downstream ICs (e.g., load switches, PD controllers) remain below damage thresholds during lightning surges. |
| Peak Pulse Current | 40 A (8/20μs) - Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial equipment. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - Provides system-level ESD robustness without external shielding or layout mitigation. |
| Dynamic Resistance | 20 mΩ - Enables low-voltage drop during conduction, minimizing energy dissipation and thermal rise under repeated transients. |
| Junction Capacitance | 175 pF at 22 V, 1 MHz - Compatible with DC-coupled 22V power rails; not intended for high-speed data lines. |
Pinout & Package
Package: DFN-6 (1.6 mm × 1.6 mm × 0.55 mm), RoHS-compliant, halogen-free, UL 94V-0 molding compound, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to maximize current sharing and minimize parasitic inductance. |
| Pins 4, 5, 6 | IN | Protected line input (e.g., VBUS); parallel connection ensures uniform current distribution and optimal 40A surge handling. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Enables flat clamping voltage vs. current curve-no linear VC = VBR + IPP×RDYN drift-critical for predictable protection margin. |
| Stable clamping over temperature | 27.5–28 V clamping maintained from –40°C to +125°C-eliminates thermal derating calculations required for standard TVS diodes. |
| Low dynamic resistance | 20 mΩ ensures minimal IR drop during 40A surge, reducing localized heating and enabling reliable multi-pulse operation. |
| High-energy surge rating | 1120 W peak pulse power supports repeated 40A/8/20μs events per IEC 61000-4-5 without parametric shift or failure. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting VBUS lines in USB Type-C ports supporting up to 20V/5A PD negotiation, exposed to ESD and cable discharge events. IC Role / Device Role / Timing Role: Primary EOS shunt suppressor placed directly at connector, clamping transients before reaching PD controller and load switch. Use Value: Maintains 27.5–28 V clamping at full 40A surge-well below 30V absolute maximum ratings of common PD controllers like TPS6598x. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., ON Semi NIS513x, TI TPS2594x) against lightning-induced surges on 24V DC power rails. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage seen by the load switch's internal FET gate oxide and drain-source junction. Use Value: Prevents catastrophic failure of load switch due to overvoltage stress during 1.2/50μs combination wave surges up to ±1kV (RS = 42Ω). |
| IoT Edge Node Power Bus Protection | Storage Device 22V Rail Protection |
Use Scenario: Securing 22V auxiliary power inputs in battery-backed IoT gateways or remote sensors deployed in electrically noisy environments (e.g., factory floors, smart meters). IC Role / Device Role / Timing Role: Standalone transient suppressor on main DC input, operating independently of upstream regulators or PMICs. Use Value: Delivers guaranteed ±30kV ESD immunity and 40A surge capability in a 1.6 mm² footprint-enabling compact, ruggedized edge node designs. |
Use Scenario: Protecting 22V bias rails in NVMe SSD enclosures or enterprise storage backplanes subject to hot-plug transients and board-level ESD. IC Role / Device Role / Timing Role: DC rail clamp positioned between connector and bulk capacitor, limiting overshoot during insertion/removal events. Use Value: 175 pF capacitance avoids signal integrity issues on adjacent high-speed traces while providing robust 22V rail stabilization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P.C | Identical electrical specs and DFN-6 package; differs only in reel packaging (3,000 pcs/reel vs. 10,000 pcs for .TCT) and date-code marking format. | No functional difference; suitable for same USB PD, load switch, and industrial 22V rail use cases. | Select TDS2211P.C for volume production with standard Semtech tape-and-reel logistics. |
| SMAJ22A | Standard unidirectional TVS diode; higher clamping (~38V at 24A/125°C), fixed RDYN (~0.5 Ω), no FET-based flat-clamp behavior. | Limited to lower-temperature or lower-surge applications where clamping margin allows >10V overhead above 22V working voltage. | Choose SMAJ22A only if cost sensitivity outweighs clamping stability and thermal performance requirements. |
Compared with TDS2211P.C, RCLAMP0821P.TCT offers identical protection performance but optimized for high-volume automated assembly via different tape-and-reel configuration; versus SMAJ22A, RCLAMP0821P.TCT delivers superior clamping consistency, lower dynamic impedance, and broader temperature resilience-critical for mission-critical 22V rail protection.
Availability
RCLAMP0821P.TCT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch inputs, and IoT edge node power buses requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for RCLAMP0821P.TCT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Semtech Corporation is a U.S.-based fabless semiconductor company specializing in analog and mixed-signal ICs for precision protection, sensing, and signal integrity.
RCLAMP0821P.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V power rail protection with superior clamping stability and surge endurance.
FAQ
What is the primary protection function of the RCLAMP0821P.TCT?
The RCLAMP0821P.TCT functions as a transient diverting suppressor that shunts high-energy EOS/ESD events-up to 40A (8/20μs) and ±30kV (IEC 61000-4-2)-away from sensitive downstream components. Its FET-based architecture maintains a stable 27.5–28V clamping voltage across full current and temperature ranges, unlike conventional TVS diodes whose clamping rises with current and temperature.
Can RCLAMP0821P.TCT be used on high-speed data lines like USB SuperSpeed or PCIe?
No, RCLAMP0821P.TCT is not suitable for high-speed data lines. Its 175 pF junction capacitance at 22V would severely degrade signal integrity on differential pairs operating above ~100 Mbps. It is specifically designed for DC-coupled 22V power or low-frequency I/O lines-such as USB PD VBUS, load switch inputs, or industrial 24V rails-where capacitance is non-critical.
How does RCLAMP0821P.TCT differ from standard TVS diodes like SMAJ22A?
RCLAMP0821P.TCT uses a surge-rated FET and precision trigger circuit to achieve near-constant clamping voltage (27.5–28V) across 1–40A surge currents and –40°C to +125°C, whereas SMAJ22A-a pn-junction TVS-exhibits rising clamping (e.g., ~38V at 24A/125°C) due to fixed dynamic resistance. This makes RCLAMP0821P.TCT more reliable for protecting margin-constrained 22V systems.
What is the correct PCB layout practice for RCLAMP0821P.TCT?
Place RCLAMP0821P.TCT as close as possible to the protected connector. Connect all three IN pins (4, 5, 6) in parallel with a short, wide trace to the protected line, and tie all three GND pins (1, 2, 3) directly to a solid ground plane using multiple vias. Avoid thermal pads-energy is dissipated in the silicon FET, not the package-and ensure no routing stubs exist between device and connector.
Is RCLAMP0821P.TCT RoHS and REACH compliant?
Yes, RCLAMP0821P.TCT is Pb-free, halogen-free, and fully compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Its molding compound meets UL 94V-0 flammability rating, and lead finish is lead-free per J-STD-609.
RCLAMP0821P.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0402 (1006 Metric)
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8V (Max)
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 25V
- Current - Peak Pulse (10/1000µs):
- 4A (8/20µs)
- Power - Peak Pulse:
- 100W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.3pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2
RCLAMP0821P.TCT FAQ
1.How can I place an order for RCLAMP0821P.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP0821P.TCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for RCLAMP0821P.TCT reliable?
The price and inventory of RCLAMP0821P.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP0821P.TCT is usually 5 days.
3.What payment methods are accepted for RCLAMP0821P.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP0821P.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP0821P.TCT?
RCLAMP0821P.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP0821P.TCT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for RCLAMP0821P.TCT?
For technical support, including RCLAMP0821P.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP0821P.TCT requirements.
6.How does Aetrix verify that RCLAMP0821P.TCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP0821P.TCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that RCLAMP0821P.TCT meets industry standards.
7.What is the process for return or replacement of RCLAMP0821P.TCT?
All RCLAMP0821P.TCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP0821P.TCT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The RCLAMP0821P.TCT part is unused and in its original packaging.
Return procedure for RCLAMP0821P.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP0821P.TCT Tags
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